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All results from a given calculation for CHF2CHF2 (1,1,2,2-tetrafluoroethane)

using model chemistry: CCD/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at CCD/aug-cc-pVDZ
 hartrees
Energy at 0K-475.810545
Energy at 298.15K-475.814551
HF Energy-474.709929
Nuclear repulsion energy264.603030
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at CCD/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3151 3039 0.00      
2 Ag 1494 1441 0.00      
3 Ag 1183 1141 0.00      
4 Ag 1117 1077 0.00      
5 Ag 622 600 0.00      
6 Ag 361 348 0.00      
7 Au 1357 1309 34.26      
8 Au 1170 1128 389.12      
9 Au 206 199 2.10      
10 Au 89 85 2.57      
11 Bg 1388 1339 0.00      
12 Bg 1136 1096 0.00      
13 Bg 486 469 0.00      
14 Bu 3159 3047 28.90      
15 Bu 1323 1276 27.18      
16 Bu 1140 1099 219.62      
17 Bu 534 515 10.38      
18 Bu 411 397 51.88      

Unscaled Zero Point Vibrational Energy (zpe) 10163.2 cm-1
Scaled (by 0.9645) Zero Point Vibrational Energy (zpe) 9802.4 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at CCD/aug-cc-pVDZ
ABC
0.16857 0.10373 0.06801

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/aug-cc-pVDZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.249 0.722 0.000
C2 0.249 -0.722 0.000
H3 -1.347 0.791 0.000
H4 1.347 -0.791 0.000
F5 0.249 1.352 1.104
F6 0.249 1.352 -1.104
F7 -0.249 -1.352 1.104
F8 -0.249 -1.352 -1.104

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 F7 F8
C11.52761.10052.19891.36511.36512.34982.3498
C21.52762.19891.10052.34982.34981.36511.3651
H31.10052.19893.12402.02012.02012.64892.6489
H42.19891.10053.12402.64892.64892.02012.0201
F51.36512.34982.02012.64892.20862.74933.5265
F61.36512.34982.02012.64892.20863.52652.7493
F72.34981.36512.64892.02012.74933.52652.2086
F82.34981.36512.64892.02013.52652.74932.2086

picture of 1,1,2,2-tetrafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 112.574 C1 C2 F7 108.516
C1 C2 F8 108.516 C2 C1 H3 112.574
C2 C1 F5 108.516 C2 C1 F6 108.516
H3 C1 F5 109.567 H3 C1 F6 109.567
H4 C2 F7 109.567 H4 C2 F8 109.567
F5 C1 F6 107.987 F7 C2 F8 107.987
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability